linux-kernel - [PATCH v2] dts64: mt7622: fix slow sd card access

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Message-Id: <20210113180919.49523-1-linux@fw-web.de>
Date:   Wed, 13 Jan 2021 19:09:19 +0100
From:   Frank Wunderlich <linux@...web.de>
To:     linux-mediatek@...ts.infradead.org
Cc:     Frank Wunderlich <frank-w@...lic-files.de>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Sean Wang <sean.wang@...iatek.com>,
        Jimin Wang <jimin.wang@...iatek.com>,
        Ryder Lee <ryder.lee@...iatek.com>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        sin_wenjiehu <sin_wenjiehu@...iatek.com>,
        Wenbin.Mei@...iatek.com, skylake.huang@...iatek.com,
        stable@...r.kernel.org
Subject: [PATCH v2] dts64: mt7622: fix slow sd card access

From: Frank Wunderlich <frank-w@...lic-files.de>

Fix extreme slow speed (200MB takes ~20 min) on writing sdcard on
bananapi-r64 by adding reset-control for mmc1 like it's done for mmc0/emmc.

Cc: stable@...r.kernel.org
Fixes: 2c002a3049f7 ("arm64: dts: mt7622: add mmc related device nodes")
Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>
---
changes since v1:
 - drop change to uhs-mode because mt7622 does not support it
---
 arch/arm64/boot/dts/mediatek/mt7622.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt7622.dtsi b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
index 5b9ec032ce8d..7c6d871538a6 100644
--- a/arch/arm64/boot/dts/mediatek/mt7622.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
@@ -698,6 +698,8 @@ mmc1: mmc@...40000 {
 		clocks = <&pericfg CLK_PERI_MSDC30_1_PD>,
 			 <&topckgen CLK_TOP_AXI_SEL>;
 		clock-names = "source", "hclk";
+		resets = <&pericfg MT7622_PERI_MSDC1_SW_RST>;
+		reset-names = "hrst";
 		status = "disabled";
 	};
 
-- 
2.25.1